v-captcha ( str -- str )
Form validators

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Vocabulary
validators

Inputs

str

a string

Outputs

str

a string

Word description
Throws a validation error if the string is non-empty. This is used to create bait fields for spam-bots to fill in.

Definition

USING: kernel sequences ;

IN: validators

: v-captcha ( str -- str )
    dup empty? [ "must remain blank" throw ] unless ;